Tending a wound requires bandages, which can be purchased for cheap at the general store in Semanri's Northwest Town Square in bundles of 25 (and they can be worn for your convenience). Tending your own wounds is harder than tending someone else's and especially if you're trying to tend your own head, neck, or wings (Avians).

If the wounded area is very damaged, you may require someone with a higher skill or a Healer to dress the wound. Tending relies on and gives skill experience towards the Heal skill.